Low confidence at work after 10 years in the same role

[user49877900]

I've been in my current for 10 years and I know deep down that I am good at it and I know my job inside out, so why do I feel I'm useless at it, why do I feel I'm slower than everyone else, that I'm letting the team down. Why is my confidence so low and why did I need to tell all my manager this and break down?.
How do i rebuild my confidence and how do I face my manager on Monday after crying in front of today.

Is your role very senior? Are there any opportunities for progression? Is it common for people to be in the same role for multiple years at your workplace?

No the role isn't senior, there is progression but I don't want to progress (was diagnosed with cancer in my 30's which changed my outlook), yes fairly normal for people to do it long term but I am the longest there.

You have probably been in your role so long that you are taken for granted by your employer because you just get on with the work and don't cause a fuss. This is what often happens when you don't poke your head over the parapet or seek promotion.

If people commonly remain in the role long-term, then you're not much different than them. Is it maybe because you've become a bit bored and, because you aren't interested in a promotion of any kind, you're beginning to feel unfulfilled?

Only you know the answers to your questions as you have all the background context. For what it's worth, people cry infront of their managers all the time. They'd have seen it before and, I'm sure, won't think any differently of you. Try not to beat yourself up. Sounds like you need to do some soul searching.